1 files changed, 39 insertions, 0 deletions
diff --git a/toolkit/components/startup/tests/unit/head_startup.js b/toolkit/components/startup/tests/unit/head_startup.js
new file mode 100644
index 0000000000..3db4a12d89
--- /dev/null
+++ b/toolkit/components/startup/tests/unit/head_startup.js
@@ -0,0 +1,39 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+const XULRUNTIME_CONTRACTID = "@mozilla.org/xre/runtime;1";
+const XULRUNTIME_CID = Components.ID("7685dac8-3637-4660-a544-928c5ec0e714}");
+
+var { XPCOMUtils } = ChromeUtils.importESModule(
+  "resource://gre/modules/XPCOMUtils.sys.mjs"
+);
+
+var gAppInfo = null;
+
+function createAppInfo(ID, name, version, platformVersion = "1.0") {
+  let { newAppInfo } = ChromeUtils.importESModule(
+    "resource://testing-common/AppInfo.sys.mjs"
+  );
+  gAppInfo = newAppInfo({
+    ID,
+    name,
+    version,
+    platformVersion,
+    crashReporter: true,
+    replacedLockTime: 0,
+  });
+
+  let XULAppInfoFactory = {
+    createInstance(iid) {
+      return gAppInfo.QueryInterface(iid);
+    },
+  };
+
+  let registrar = Components.manager.QueryInterface(Ci.nsIComponentRegistrar);
+  registrar.registerFactory(
+    XULRUNTIME_CID,
+    "XULRuntime",
+    XULRUNTIME_CONTRACTID,
+    XULAppInfoFactory
+  );
+}